Question

我买了一部用来测试我的Android应用的手机。手机API级别至少需要16级。我有一个我正在创建的应用程序，其中有一些代码要求API级别为23.当我尝试将最低级别更改为16时，我收到了一个错误代码，表明＆＃34;调用需要API级别23（当前最小值为16）#tickselfpermission＆＃34;。这与我的主要活动的底部有关，其中有代码要求用户访问其图像的权限。有没有办法改变它，以便我可以在手机上试试？我想知道更改代码，而不是API。

 public class MainActivity extends AppCompatActivity {


        EditText editText2;


    public void getPhoto() {
        Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(intent,1);
    }

        @Override
        public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
            super.onRequestPermissionsResult(requestCode, permissions, grantResults);

            if (requestCode ==1){
                if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED);{
                getPhoto();
                }
            }
        }

        @Override
            protected void onCreate (Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);





                editText2 = (EditText) findViewById(R.id.editText2);

                editText2.setOnKeyListener(new View.OnKeyListener() {
                    @Override
                    public boolean onKey(View v, int keyCode, KeyEvent event) {
                        if ((event.getKeyCode() == KeyEvent.KEYCODE_ENTER) && (event.getAction() ==
                                KeyEvent.ACTION_DOWN)) {
                            String currentStr = editText2.getText().toString();
                            String temp[] = currentStr.split("\n");
                            String result = "";
                            for (int i = 0; i < temp.length - 1; i++) {
                                result += temp[i] + "\n";
                            }
                            if (temp.length == 1) {
                                result = result + "\u2022 " + temp[temp.length - 1];
                            } else {
                                result = result.substring(0, result.length() - 1);
                                result = result + "\n\u2022 " + temp[temp.length - 1];
                            }
                            editText2.setText(result);
                            editText2.setSelection(editText2.getText().length());
                        }
                        return false;
                    }
                });


            }

        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            super.onActivityResult(requestCode, resultCode, data);


            if (requestCode ==1 && resultCode == RESULT_OK && data != null) {
                Uri selectedImage = data.getData();

                try {
                    Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImage);


                    ImageView imageView2 = (ImageView) findViewById(R.id.imageView2);
                    imageView2.setImageBitmap(bitmap);


                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

            public void click(View view) {
                if (checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED){
                    requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
                } else {
                    getPhoto();
            }
        }
    }

Answer 1

存储在API级别23及更高级别中需要许可。对于以下API级别23，将自动授予权限。有关详细信息，请参阅:)：因此您需要按照以下方式管理权限：

<?php
include "db_connection.php";
$locations=array();
    $query =  $conn->query('SELECT `pg_address` FROM `tbl_master_property` limit 10');
     while ($row =$query->fetch_assoc()) {
       $list[] = $row;
    }
?>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Geocoding service</title>
    <style>
      html, body, #map-canvas 
      {
        height: 100%;
        margin: 0px;
        padding: 0px
      }
    </style>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
<script type="text/javascript">
var geocoder;
var map;
var data = <?php echo json_encode($list); ?>; 
//console.log(data);
var pglist = (JSON.stringify(data));
//alert(pglist);
function initialize() 
{
  geocoder = new google.maps.Geocoder();
  var latlng = new google.maps.LatLng(53.3496, -6.3263);
  var mapOptions = 
  {
    zoom: 8,
    center: latlng
  }
  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
  codeAddress(pglist);//call the function
}

function codeAddress(address) 
{
  geocoder.geocode( {address:address}, function(results, status) 
  {
    if (status == google.maps.GeocoderStatus.OK) 
    {
      map.setCenter(results[0].geometry.location);//center the map over the result
      //place a marker at the location
      var marker = new google.maps.Marker(
      {
          map: map,
          position: results[0].geometry.location
      });
    } else {
      alert('Geocode was not successful for the following reason: ' + status);
   }
  });
}

google.maps.event.addDomListener(window, 'load', initialize);

    </script>
  </head>
  <body>
    <div id="map-canvas"></div>
  </body>
</html>

调用需要API级别23（当前最小值为16）#checkselfpermission

1 个答案: